/Engine/Source/Runtime/Engine/Public/ParticleHelper.h
struct FRibbonTypeDataPayload : public [FTrailsBaseTypeDataPayload](API\Runtime\Engine\FTrailsBaseTypeDataPayload)
int32
SourceIndex
The source index tracker (particle index, etc.)
FVector3f
Tangent
Tangent for the trail segment
FVector3f
Up
The 'up' for the segment (render plane)